2 - x - 49 = 5 . 32
2 - x - 49 = 5 . 9
2 - x - 49 = 45
2 - x = 45 + 49
2 - x = 94
x = 2 - 94
x = - 92
Bài làm
2 - x - 49 = 5 . 32
2 - x - 49 = 5 . 9
2 - x - 49 = 45
2 - x = 45 + 49
2 - x = 94
x = 2 - 94
x = - 92
2-x-49=5x32
2-x-49=5x9
2-x-49=45
2-x=45+49
2-x=94
x=2-94
x=-92